Introduction

I was confused by the appearance of ‘params’ in the signature of a method (see example snippet below). It seemed redundant – even if I removed it, the method worked just fine. 

void DisplayStrings(params string[] strings);

Params allows a short-cut during method invocation

While the method itself is unaffected by the ‘params’ in its signature, the caller of the method is affected. The caller can, instead of specifying an array of values, simply pass in a list of values.  See the difference in the snippets below.

Normal way of passing in values to this method (using an array)

DisplayStrings(new string[]{"hello","world"})

Params way (shortcut) of passing in values (no array needed, just pass in the values)

DisplayStrings("Hello","World");

Summary

Params just allows a short-cut for passing in an array of values  to a method. Instead of initializing and passing an array, one can simply pass in the list of values (comma separated).

Anuj holds professional certifications in Google Cloud, AWS as well as certifications in Docker and App Performance Tools such as New Relic. He specializes in Cloud Security, Data Encryption and Container Technologies.

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Anuj Varma – who has written posts on Anuj Varma, Hands-On Technology Architect, Clean Air Activist.

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